[Matthew Mosesohn] Kubernetes: More than just a toy

Presentation from GDG DevFest Ukraine 2016.
Learn more at: https://devfest.gdg.org.ua

Transcript

1. Kubernetes: More than just a toy a look into deploying with Kargo Matthew Mosesohn Deployment Engineer @ Mirantis
2. #dfua What is Kubernetes for? Managing containers Networking containers Application availability Publishing services
3. #dfua What does Kubernetes require? Master(s) Minion(s) Container runtime Network plugin Certificate management
4. #dfua Kubernetes layout Image source: https://keithtenzer.com/tag/kubernetes/
5. #dfua Why is deployment so divisive? Salt-based kube-up.sh Orchestration Division in configuration management solutions Systemd and Docker aren’t friends
6. #dfua Kargo - an Ansible playbook Realistic approach Covers all components
7. #dfua Kargo’s approach Ansible based Cross-platform Containerized everything One package-based component: Docker Simple component management
8. #dfua Why Ansible? Flexible Readable Works on many OSes Native Kubernetes module (in Ansible 2.1) Composable roles
9. #dfua Deployment Workflow Preinstall step • Define service addresses • Prepare log directories Install Docker Install ETCD Install Kubernetes Master Install Kubernetes Minion Install any add-ons
10. #dfua Component upgrade workflow Apply new configuration parameters Update container launch script Restart relevant systemd unit Static pods will restart automatically
11. #dfua Upgrade concerns Downtime = pods being rescheduled It’s okay! Alternative: Drain nodes before maintenance
12. #dfua High Availability ETCD: Horizontal scaling with n etcd-proxies Use local etcd-proxy Kube-apiserver: Separate load balancer (Issue #30588) via HAProxy or nginx Use cloud LB when available
13. #dfua Next steps for Kargo Community integration and collaboration Rolling/safe upgrades Self-provisioning via Terraform Support for more cloud platforms (Azure, DigitalOcean) Testing against master Kubernetes code (e2e) More add-ons
14. New contributors wanted!
15. Matthew Mosesohn +MatthewMosesohn Questions? Thank you!